A storm surge is a rapid rise in sea level generated by the low atmospheric pressure and gale force onshore winds experienced during a tropical cyclone.
Storm surges can cause inundation of low-lying coastal areas. The combination of a storm surge and a normal ocean tide is known as a ‘storm tide.
The Storm Surge Map shows inundation at 1 Meter, 2 Meters, 4 Meters and 6 Meters above Highest Astronomical Tide.
The different colours (Red, Orange, Yellow and Blue) indicate the seperate areas that may be affected depending on the size of the storm surge predictions. After a cyclone has passed and the threat of a storm surge is evident, the Burdekin Shire Council will act depending on the advice given from the BOM as to the predicted height of the expected storm surge (1m, 2m, 4m, 6m) and innundation. Based on this information residents in those areas may be evacuated.